File name 40240.pdfINTEGRATED CIRCUITS
DATA SHEET
For a complete data sheet, please also download:
· The IC04 LOCMOS HE4000B Logic Family Specifications HEF, HEC · The IC04 LOCMOS HE4000B Logic Package Outlines/Information HEF, HEC
HEF40240B buffers Octal inverting buffers with 3-state outputs
Product specification File under Integrated Circuits, IC04 January 1995
Philips Semiconductors
Product specification
Octal inverting buffers with 3-state outputs
DESCRIPTION The HEF40240B is an octal inverting buffer with 3-state outputs. It features output stages with high current output capability suitable for driving highly capacitive loads. The 3-state outputs are controlled by the output enable inputs EOA and EOB. A HIGH on EO causes the outputs to assume a high impedance OFF-state. The device also features hysteresis on all inputs to improve noise immunity. Schmitt-trigger action in the inputs makes the circuit highly tolerant to slower input rise and fall times. The HEF40240B is pin and functionally compatible with the TTL `240' device.
HEF40240B buffers
Fig.2 Pinning diagram.
HEF40240BP(N): 20-lead DIL; plastic (SOT146-1) HEF40240BD(F): 20-lead DIL; ceramic (cerdip) (SOT152) HEF40240BT(D): 20-lead SO; plastic (SOT163-1) ( ): Package Designator North America PINNING IA1 to IA4 IB1 to IB4 OA1 to OA4 OB1 to OB4 EOA, EOB inputs inputs bus outputs bus outputs output enable inputs (active LOW)
FAMILY DATA, IDD LIMITS category buffers Fig.1 Functional diagram. See Family Specifications
January 1995
2
Philips Semiconductors
Product specification
Octal inverting buffers with 3-state outputs
TRUTH TABLE INPUTS In H L X Notes EO L L H
HEF40240B buffers
OUTPUT On L H Z
Fig.3 Logic diagram (one buffer).
1. H = HIGH state (the more positive voltage) L = LOW state (the less positive voltage) X = state is immaterial Z = high impedance off state
RATINGS Limiting values in accordance with the Absolute Maximum System (IEC 134) See Family Specifications except for: D.C. current into any input D.C. source or sink current into any output D.C. current into the supply terminals DC CHARACTERISTICS VSS = 0 V VDD PARAMETER V Output current HIGH Output current HIGH Output current LOW Hysteresis voltage (any input) 5 10 15 5 10 15 5 10 15 5 10 15 V 3,6 8,4 13,2 4,6 9,5 13,5 - - - - - - V - - - - - - -IOH -IOH -IOH -IOH -IOH -IOH VOH VOL SYMBOL -40 MIN. 9,3 14,4 19,5 0,75 1,85 14,5 2,9 9,5 30,0 - - - TYP. - - - - - - - - - - - - Tamb (°C) +25 MIN. 10,0 15,0 20,0 0,6 1,5 15,0 2,3 7,6 25,0 - - - TYP. 24,0 46,0 62,0 1,2 3,0 50,0 5,4 17,0 45,0 220,0 250,0 320,0 MIN. 10,7 15,0 19,8 0,45 1,1 15,5 1,75 5,50 19,0 - - - +85 TYP. - - - - - - - - - - - mA mA mA mA mA mA mA mA mA mV mV mV UNIT ± II ± IO ±I max. max. max. 10 mA 25 mA 100 mA
0,4 IOL 0,5 IOL 1,5 IOL - - - VH VH VH
January 1995
3
Philips Semiconductors
Product specification
Octal inverting buffers with 3-state outputs
HEF40240B buffers
(1) P-channel MOS transistor conducting. (2) P-channel MOS transistor and bipolar n-